Reduced quantum fluctuations in the Josephson junction

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.32.4750· OSTI ID:5261342

Wodkiewicz, K

We predict that a Josephson junction can exhibit, under certain conditions, squeezed or reduced quantum fluctuations of the tunneling current. Using the formal analogy of the Josephson junction to a system of two-level atoms, we show that these reduced fluctuations are closely related to the Bloch-state description of the Bardeen-Cooper-Schrieffer wave function and to the angular-momentum algebra of the proper dynamical variables describing the tunneling process.

• Research Organization: Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 and Institute of Theoretical Physics, Warsaw University, Warsaw 00-681, Poland
• OSTI ID: 5261342
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:7; ISSN PRBMD
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BCS THEORY
BLOCH THEORY
CURRENTS
ELECTRIC CURRENTS
FLUCTUATIONS
FUNCTIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT
UNCERTAINTY PRINCIPLE
VARIATIONS
WAVE FUNCTIONS